Ujian1-perdana-julai20082009

  • May 2020
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FAKULTI KEJURUTERAAN MEKANIKAL MANUFACTURING PROCESS (SME 2713) TEST 1 (40 MARKS) ANSWER ALL QUESTIONS JAWAB SEMUA SOALAN 1. Berikan pandangan anda berhubung dengan kepentingan pembuatan dalam aspek pembangunan teknologi dan ekonomi. Give your opinion on the importance of manufacturing with respect to technology and economic development.(3 markah) 2. Terangkan ciri bagi pengeluaran kuantiti rendah berhubung dengan produk, peralatan, buruh dan susun atur loji. Buatkan lakaran yang berkaitan bagi menjelaskan jawapan anda. Explain the characteristics of low quantity production related to the product, equipment, labour and plant layout. Make appropriate sketch to illustrate your answer.(5 markah) 3. Terangkan aktiviti-aktiviti utama di peringkat perancangan dan kawalan pengeluaran bagi proses pembangunan produk. Explain the major activities at the production planning and control stage of product development (3 marks) 4. Bincangkan faktor-faktor atau elemen penting yang perlu dipertimbangkan bagi mempastikan kejayaan penggunaan kaedah kejuruteraan serentak dalam pembangunan produk. Discuss the important elements or factors that should be considered to ensure successful implementation of concurrent engineering in product development.(4 marks) 5. Sekiranya sesuatu komponen yang dihasilkan perlu berfungsi dengan memuaskan, ia mestilah mempunyai beberapa sifat mekanikal yang diperlukan. Buatkan satu senarai semak dalam bentuk pertanyaan (6 soalan) yang perlu dijawab oleh jurutera berhubung dengan pemilhan bahan untuk pembuatan produk. If the component is to perform adequately, it must possess the necessary mechanical properties. Make a check list in the form of questions (6 questions) that must be answered by the engineers with regards to material selection in product manufacture.(3 marks) 6. Dengan bantuan lakaran yang bersesuaian, terangkan prinsip-prinsip kebolehasilan dan berikan padangan anda berhubung dengan penggunaan prinsip ini. Kemudian, senarainak dua (2) kelebihan menggunakan prinsip ini dalam rekabentuk produk dan proses. With the aid of sketches, explain the principles of reproducibility and give your opinion on the application of these principles in manufacturing. Then, list two (2) advantages of implementing these principles in product and process design.(6 marks) 7. Terangkan dua (2) perbezaan pembuatan produk berpasangan menggunakan kaedah “make to suit” dan asembli pilihan. Explain two (2) differences between manufacturing of mating parts by “make to suit” and “selective assembly”.(2 marks) 8. Apa yang dimaksudkan dengan pembuatan boleh-saling-tukar?. Apakah kepentingannya? Berikan dua (2) sebab kenapa adalah lebih ekonomik menggunakan sistem pembuatan bolehsaling-tukar bagi komponen asemli yang diperlukan dengan kuantiti yang banyak? What is meant by Interchangeable Manufacture? And what is its importance? Give two (2) reasons why a system of interchangeable manufacture of the component parts of assemblies required in quantity is economically advantageous.(5 marks)

9. Bagi sistem had dan padanan, terdapat sistem had terima sesisi dan dwisisi. Apakah perbezaannya? Yang mana satu lebih baik dan kenapa? Kemudian buatkan lakaran padanan kelegaan sistem dwisisi menggunakan sistem asas aci. Under the systems of limits and fits, there are unilateral and bilateral tolerance systems. What is the difference? Which one is preferred, and why? Then sketch a unilateral shaft based clearance fit.(5 marks) 10. Menggunakan standard BS4500, kira nilai bagi asembli aci dan lubang dengan spesifikasi Ǿ 60.000mm H7p6. Using the BS4500 standard, calculate the values for a shaft and hole assembly specification of Ǿ 60.000mm H7p6. i. The nominal size for the assembly ii. Limits for both components. iii. Tolerances for the both components. iv. Minimum and maximum clearance/interference.(4 marks)